The A380 has been design frozen because 4 A380s have been built or are in production. The B787 design freeze will happen when the first goes on the production line, except for a few minor touch ups which might happen.
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He wants to know how many orders Airbus had before the A380 design was frozen. See here: "I'm wondering how many orders the A380 had garnered..." It's pretty clear in his original post. I don't know the answer myself, but I'm sure someone here does.